netdev - [PATCH net-next 12/13] ravb: Factorise ravb_emac

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Date:   Wed, 25 Aug 2021 08:01:53 +0100
From:   Biju Das <biju.das.jz@...renesas.com>
To:     "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
Cc:     Biju Das <biju.das.jz@...renesas.com>,
        Sergey Shtylyov <s.shtylyov@....ru>,
        Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>,
        Andrew Lunn <andrew@...n.ch>,
        Sergei Shtylyov <sergei.shtylyov@...il.com>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Adam Ford <aford173@...il.com>,
        Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>,
        netdev@...r.kernel.org, linux-renesas-soc@...r.kernel.org,
        Chris Paterson <Chris.Paterson2@...esas.com>,
        Biju Das <biju.das@...renesas.com>
Subject: [PATCH net-next 12/13] ravb: Factorise ravb_emac_init function

The E-MAC IP on the R-Car AVB module has different initialization
parameters for RX frame size, duplex settings, different offset
for transfer speed setting and has magic packet detection support
compared to E-MAC on RZ/G2L Gigabit Ethernet module. Factorise
the ravb_emac_init function to support the later SoC.

Signed-off-by: Biju Das <biju.das.jz@...renesas.com>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
---
 drivers/net/ethernet/renesas/ravb.h      |  1 +
 drivers/net/ethernet/renesas/ravb_main.c | 14 ++++++++++++--
 2 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/renesas/ravb.h b/drivers/net/ethernet/renesas/ravb.h
index 24a3abd00053..117eb22349c5 100644
--- a/drivers/net/ethernet/renesas/ravb.h
+++ b/drivers/net/ethernet/renesas/ravb.h
@@ -987,6 +987,7 @@ struct ravb_hw_info {
 	void (*set_rate)(struct net_device *ndev);
 	int (*set_rx_csum_feature)(struct net_device *ndev, netdev_features_t features);
 	void (*dmac_init)(struct net_device *ndev);
+	void (*emac_init)(struct net_device *ndev);
 	const char (*gstrings_stats)[ETH_GSTRING_LEN];
 	size_t gstrings_size;
 	netdev_features_t net_hw_features;
diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c
index 391e7927ea08..7a144b45e41d 100644
--- a/drivers/net/ethernet/renesas/ravb_main.c
+++ b/drivers/net/ethernet/renesas/ravb_main.c
@@ -425,8 +425,7 @@ static int ravb_ring_init(struct net_device *ndev, int q)
 	return -ENOMEM;
 }
 
-/* E-MAC init function */
-static void ravb_emac_init(struct net_device *ndev)
+static void ravb_rcar_emac_init(struct net_device *ndev)
 {
 	/* Receive frame limit set register */
 	ravb_write(ndev, ndev->mtu + ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN, RFLR);
@@ -452,6 +451,15 @@ static void ravb_emac_init(struct net_device *ndev)
 	ravb_write(ndev, ECSIPR_ICDIP | ECSIPR_MPDIP | ECSIPR_LCHNGIP, ECSIPR);
 }
 
+/* E-MAC init function */
+static void ravb_emac_init(struct net_device *ndev)
+{
+	struct ravb_private *priv = netdev_priv(ndev);
+	const struct ravb_hw_info *info = priv->info;
+
+	info->emac_init(ndev);
+}
+
 static void ravb_rcar_dmac_init(struct net_device *ndev)
 {
 	struct ravb_private *priv = netdev_priv(ndev);
@@ -1999,6 +2007,7 @@ static const struct ravb_hw_info ravb_gen3_hw_info = {
 	.set_rate = ravb_set_rate,
 	.set_rx_csum_feature = ravb_set_features_rx_csum,
 	.dmac_init = ravb_rcar_dmac_init,
+	.emac_init = ravb_rcar_emac_init,
 	.gstrings_stats = ravb_gstrings_stats,
 	.gstrings_size = sizeof(ravb_gstrings_stats),
 	.net_hw_features = NETIF_F_RXCSUM,
@@ -2019,6 +2028,7 @@ static const struct ravb_hw_info ravb_gen2_hw_info = {
 	.set_rate = ravb_set_rate,
 	.set_rx_csum_feature = ravb_set_features_rx_csum,
 	.dmac_init = ravb_rcar_dmac_init,
+	.emac_init = ravb_rcar_emac_init,
 	.gstrings_stats = ravb_gstrings_stats,
 	.gstrings_size = sizeof(ravb_gstrings_stats),
 	.net_hw_features = NETIF_F_RXCSUM,
-- 
2.17.1